HSS Spiral Point Power Tool Tap, Metric, ISO Standard Material ID: 8180400 Spiral Point Power Tool Tap with chamfer form B with a 3.5-5xP plug lead, for ISO-Metric thread M3 with 0.50 mm pitch and 6H class of fit, dimensions according to ISO 529 standard with 3.15mm shank and 2.5mm square drive, HSS with bright finish for 2xD through hole threading in general purpose applications Bright finish Prevents work piece material from sticking to the cutting edge Simple, strong design in high-quality HSS Cost Effective solution for general usage Spiral point Designed for efficient threading of through holes Shorter ISO Standard design Stable and reliable performance, up to 2 x d hole depth Description Thread diameter size (TDZ) 3 Premachined hole diameter - millimeter (PHD) 2.5 mm Thread pitch - millimeter (TP) 0.5 mm Overall length - millimeter (OAL) 48 mm Threading length - millimeter (THL) 11 mm Usable Length - millimeter (LU) 18 mm Connection diameter - millimeter (DCON MS) 3.15